MULTISYSTEM LANGERHANS CELL HISTIOCYTOSIS PADA ANAK PEREMPUAN USIA DUA TAHUN (LAPORAN KASUS) MULTISYSTEM LANGERHANS CELL HISTIOCYTOSIS IN TWO YEARS OLD GIRL (CASE REPORT) Eky Indyanty Wuryaning Lestari1, Maimun Zulhaidah Arthamin1, Susanto Nugroho Adiwinoto2, Budiman1 1 2 Laboratorium Patologi Klinik Fakultas Kedokteran Universitas Brawijaya Laboratoirum Ilmu Kesehatan Anak Fakultas Kedokteran Universitas Brawijaya Abstrak Langerhans Cell Histiocytosis (LCH) merupakan penyakit yang jarang dengan karakteristik proliferasi dan migrasi sel dendritik atau histiosit (sel Langerhans). Kelainan ini terutama mengenai tulang (sistem skeletal) namun dapat juga muncul pada kulit, kelenjar tiroid, kelenjar limfe dan risk organs involvement yaitu hepar, paru, limpa, dan sistem hematopoietik. Kelainan ini relatif langka dan jarang sehingga diagnosis LCH sering kali terlambat atau luput. Diagnosis pasti LCH adalah ditemukannya CD1a antigen, protein S100, atau Langerin (CD207) pada pemeriksaan imunohistokimia atau granula Birbeck pada pemeriksaan mikroskop elektron. Pada kasus ini seorang anak perempuan usia 2 tahun dengan keluhan mata kiri menonjol, terdapat benjolan di belakang kepala, belakang telinga kiri dan leher sebelah kanan. Hasil pemeriksaan fisik didapatkan proptosis okuli sinistra, massa regio occipital, belakang telinga kiri dan leher, hepatomegali, spenomegali. Pemeriksaan laboratorium didapatkan anemia hipokrom anisositosis mikrositik, leukositosis, trombositosis. Pemeriksaan sumsum tulang mengesankan terdapat infiltrasi Langerhans cell histiocytosis. Pemeriksaan FNAB mengesankan Langerhans histiositosis. Pemeriksaan foto Schuller menunjukkan lesi litik geografik tulang fronto-temporo-parietaloccipital sinistra, occipital dextra, lesi litik destruktif pada ramus mandibula dextra. Hasil CT-scan kepala menunjukkan hasil soft tissue mass multiple. Hasil pemeriksaan imunohistokimia didapatkan hasil positif protein S100. Pada kasus ini, pasien didiagnosis LCH atas dasar gambaran morfologi sel Langerhans (FNAB) dan hasil positif protein S100 (imunohistokimia). Beberapa organ yang terlibat antara lain mata, tulang craniofacial, kulit, hepar, limpa, dan sumsum tulang. Dengan demikian pada kasus ini ditegakkan diagnosis multisystem LCH (MS-LCH). Kata kunci : Multisystem Langerhans Cell Histiocytosis, anak usia 2 tahun, protein S100 Abstract Langerhans Cell Histiocytosis (LCH) is a rare disease with characteristics of proliferation and migration of dendritic cells or cell histiocytes (Langerhans cells). The disorder primarily affect the skeletal system, but can also on the skin, thyroid gland, lymph node and risk organs involvement, that are liver, lungs, spleen, and hematopoietic systems. The disorder is relatively rare and seldom so that LCH diagnosis is often delayed or missed. Definitive diagnosis of the LCH is determined of CD1a antigen, protein S100, or Langerin (CD207) on immunohistochemistry or Birbeck granules on electron microscopy. In this case was a 2 year old girl with a protruding left eye and a lump in the back of the head, behind the left ear and the right side of the neck. Physical examination showed proptosis of the left occuli, the mass on occipital region, behind the left ear and neck, hepatomegaly, spenomegaly. Laboratory tests showed hypochromic anisocytosis anemia microcytic, leucocytosis, and thrombocytosis. Bone marrow examination showed the infiltration of Langerhans cell histiocytes. FNAB examination showed Langerhans histiocytosis. Schuller examination showed geographic lytic lesions on fronto-temporo-parietal-occipital sinistra, occipital dextra, destructive lytic lesion in the mandible ramus dextra. Head CT-scan showed multiple soft tissue mass. There was positive immunohistochemistry examination of S100 protein. In this case, the patient was diagnosed LCH based on morphological Langerhans cells (FNAB) and positive results of the S100 protein (immunohistochemistry). Some organs were involved, these were eye, craniofacial bones, skin, liver, spleen, and bone marrow. Therefore, this case enforced the diagnosis of multisystem LCH (MS-LCH). Keywords: Multisystem Langerhans cell histiocytosis, 2 y.o children, S100 protein Korespondensi: Eky Indyanty W.L Laboratorium Patologi Klinik Fakultas Kedokteran Universitas Brawijaya-RSU dr. Saiful Anwar Malang, Jl. Jaksa Agung Suprapto Malang. Telp. (0341) 357407. Email: [email protected]